Download VocALign Project LE for the Digidesign

®
VocALign Project LE
For the Digidesign® Pro Tools® System
Compatible with Apple® Macintosh® and Microsoft® Windows® systems
User’s Manual
Manual Version 2.9 LE
VocALign_Project_PT_LE.doc
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© Synchro Arts Limited 1995-2003
VocALign is a registered trademark of Synchro Arts Limited.
Pro Tools and Digidesign are registered trademarks of Digidesign,
a Division of Avid Technology, Inc.
All other trademarks are the property of their respective holders.
Contact Information
Synchro Arts Limited
13 Links Road
Epsom
Surrey
KT17 3PP
Tel: +44 1372 811934
UK Tel: 01372 811934
Fax: +44 1372 817976
UK Fax: 01372 817976
Web: www.SynchroArts.com
E-mail: [email protected]
Online Support at:
www.SynchroArts.com/support
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End User License Agreement
PLEASE READ THE FOLLOWING LEGAL AGREEMENT CAREFULLY PRIOR TO USING THE VOCALIGN
SOFTWARE PROVIDED WITH THIS AGREEMENT. USE OF THE SOFTWARE CONSTITUTES YOUR
ACCEPTANCE OF THE TERMS OF THIS LICENSE. IF YOU DO NOT AGREE TO THE TERMS OF THIS
LICENSE, YOU MAY NOT USE THIS SOFTWARE.
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acknowledge that no title to the intellectual property in the Software is transferred to you and that title and full
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English courts shall have jurisdiction to determine any dispute.
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Table of Contents.
END USER LICENSE AGREEMENT ............................................................. 3
A)
IMPORTANT NOTES............................................................................. 5
B)
INTRODUCTION TO VOCALIGN .......................................................... 6
C)
APPLICATIONS..................................................................................... 7
D)
UNLOCKING AND DEACTIVATION ..................................................... 8
E) QUICK START GUIDE ............................................................................. 8
F) OPERATIONAL GUIDE.......................................................................... 10
Screen and Controls ........................................................................ 10
Normal Operation: ........................................................................ 1112
Altering the Selected Region....................................................... 1415
Moving the Dub Display for Inspection ...................................... 1516
Processing Signals with Different Lengths................................ 1516
Aligning Multiple Takes................................................................ 1718
Foreign Dialogue Synchronization ............................................. 1819
Special Operations:...................................................................... 2021
G)
TROUBLE-SHOOTING.................................................................... 2122
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A)
Important Notes
This program is compatible with Pro Tools 6.0 LE (or higher) software on Mac
OS X and Windows XP.
VocALign Project LE for the Digidesign Pro Tools system processes audio
with sample rates up to 192 kHz.
In this manual, "VocALign Project LE, for the Digidesign Pro Tools System"
will be referred to as "VocALign Project LE"
Acknowledgements
Special thanks to the Digidesign staff for their continued support. Thanks also
to Steve Cooke for providing all voices in the demonstration audio.
VocALign is developed and sold under license from Wordfit Limited.
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B)
Introduction to VocALign
What is VocALign?
VocALign is a process that lets audio editors make the timing of one audio signal
match another automatically.
How does VocALign work?
VocALign works by applying varying amounts of time stretching or compression to
one signal (called the "dub") to make its energy peaks and troughs align in time with
a “guide” signal. This alignment is fast and of the highest quality.
What can VocALign do for me?
If you are a dialogue editor needing to lip-sync vocals, or a music editor needing to
tighten-up lead or backing vocals, instrumental tracks, or a number of other
alignment tasks, then VocALign is for you!
Consider the following examples:
Working without VocALign:
A dubbing session, for film post production, or music production, begins with a guide
track. Then the voice-over artist, singer, or musician will dub this as closely as
possible.
Because humans are not machines, they will not be able to get exactly in time with
the guide. This is generally not acceptable for lip-syncing, nor for double-tracking of
vocals or instruments. Often, the next step is to loop-record the more tricky sections
individually, but this can break-up the natural flow of the line. Lastly, the editor will
use a digital audio editor to cut and nudge individual sections into time with the guide.
The above process can take many hours for both the artist and the editor. Above all,
the process sometimes creates a result that is inferior in quality.
Working with VocALign:
The above process becomes a simple matter of getting the artist to concentrate on
creating a great performance, and not worry about the fact that it may drift in and out
of exact sync with a previous performance. VocALign can then be used to adjust the
timing by automatically applying the required amount of varying time-stretching and
compression to allow the dub to take on the same timing as the guide.
This saves studio time, saves artists time and improves the quality of your results.
Most importantly, you allow your artists to produce their best performances, free from
the rigidity normally associated with dubbing.
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C)
Applications
VocALign was originally designed for Lip Syncing replacement dialogue for
Film and Video post-production but it has been adapted to work successfully
in all of the following applications:
•
Syncing replacement dialogue in Post Production for Film and Video.
•
Double-tracking vocal parts or instrumental parts
•
Tightening backing singers with one another, or with the lead vocal
•
Tightening backing instrumental tracks
•
Sync’ing a drum machine audio-output to a real drummer (or vice versa)
•
Giving a dubbed vocal the timing of a “live” vocal performance,
•
Changing the voice or even sex of a singer or actor’s performance.
•
Replacing the vocals in a music video shoot with a production track,
achieving perfect lip-sync.
•
Foreign Language Dubbing
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D)
Unlocking and Deactivation
This version of VocALign uses iLok. Please see the accompanying Digidesign
documents for information about authorisation of Audio Suite Plug-ins or visit
www.ilok.com.
E)
Quick Start Guide
To learn to use VocALign Project LE only takes a few minutes, but for getting the
best results we strongly recommend that you first try VocALign Project LE on
the "VocALign Tutorial PT" Session.
The "VocALign Tutorial PT" session can be found in the "Tutorial" folder on the install
CD (if you have one), or can be downloaded from:
www.synchroarts.com/downloads
Next, open the “VocALign Tutorial PT" session in Pro Tools. (Alternatively have your
own suitable session loaded.)
The operation of VocALign Project LE is simple: you select and capture your Guide
and Dub audio, align the Dub to the timing of the Guide, and send the Aligned audio
back to Pro Tools.
The VocALign Project LE Window:
1. Select the VocALign Project LE Plug-in from the AudioSuite menu in Pro Tools.
2. Make sure “use in playlist” is selected
3. Select the Guide audio in Pro Tools (e.g. Steve Guide 2 in the "VocALign Tutorial
PT" session)
4. In VocALign Project LE, click the Guide button or panel and then press Capture.
The Guide audio energy profile will appear in the Guide Panel.
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5. Select the Dub audio in your audio editor (Twit-Dub in the Example Session)
6. In VocALign Project LE, select the Dub panel and press Capture. The Dub audio
energy profile will appear in the Dub Panel.
7. Make sure Normal Flexibility appears in the Settings Window. If it doesn't, press
Settings Selector "3".
8. Press Align to generate an Aligned Dub trace that lets you visually check
alignment.
9. Select a destination track for the Aligned audio. (e.g. select Audio 3 for the
"VocALign Tutorial PT" Session
10. Press Process. The Aligned audio will be sent to the selected destination track in
your audio editor.
11. In Pro Tools, play the Guide and Aligned audio regions with the Dub track muted.
The Aligned audio will have its timing corrected to match the Guide.
Note - it is recommended that you DO NOT "Save" the Pro Tools' "VocALign
Tutorial PT" session when exiting Pro Tools, so it can be used again.
Consult the information in Chapter G: “Troubleshooting” if the audio you have
aligned does not appear to be aligned properly.
Chapter F details how to get the most out of VocALign Project LE.
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F)
Operational Guide
Screen and Controls
Description of Controls:
1)
2)
3)
4)
5)
6)
Guide Button and Panel: Click on this to select Guide for input from Pro Tools.
Align Button: Click this to generate the Aligned audio trace.
Dub Button and Panel: Click on this to select Dub for input from Pro Tools.
VocALign Button: Access to the Manual.
Preview Button: Click to audition the new Aligned audio.
VocALign Settings: Control the way that VocALign aligns the audio:
1) Maximum Compression: Tries to match the Guide by time compressing the
aligned audio as much as possible
2) Low Flexibility: Alignment is not very flexible, sound quality may be best.
3) Normal Flexibility (Default): Standard VocALign settings, works best in most
cases
4) High Flexibility: Alignment is as flexible as possible
5) Maximum Expansion: Tries to match the Guide by time-expanding the aligned
audio as much as possible
7) Capture Button: Click to transfer the selected audio from Pro Tools to the Guide
or Dub panels.
8) Process Button: Creates the Aligned audio and places it in the destination track
in sync with the Guide audio.
9) Guide Energy: A profile of the energy of the Guide signal in time
10) Dub Energy: A profile of the energy of the Dub signal in time
11) Aligned Audio Trace: A representation of the energy of the new Aligned signal.
12) Scaling and scrolling controls: Click to adjust how VocALign displays the
Guide and Dub energy signals.
• Zoom in and out with the + and – buttons
• Scroll left and right with the < and > buttons
13) Destination Track: Selects into which Pro Tools track the Aligned audio will be
placed when Process is pressed. It is advised that you always select a
destination track. (See “Special Operations” later in this chapter.)
14) “Use In Playlist” button: It is advised that you always select this option
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Normal Operation:
1) In Pro Tools, open a session in which there is "Guide" (original) audio contained
in a single Pro Tools Region on one track and a "Dub" (replacement or new)
audio in a second track. Ensure that at least a third track is available and visible
in Pro Tools to receive the processed.
2) Highlight the desired portion of the Guide audio region for processing.
This can be any given region or multiple regions. Your selection can begin and
end in the middle of a region.
TIP: Try to capture up to around 0.25 to 0.5 seconds of “background” or
“leader” audio at the beginning of your Guide audio selection.
(This will assist the process to set the noise floor levels and generally allow better
alignment at the start of the signal).
Note: In the current version of VocALign Project LE, the selected audio must be
shorter than 120 seconds and longer than 0.25 seconds.
3) Select “VocALign Project LE” from the AudioSuite menu in Pro Tools. Click on
the Guide button or panel, and then click the Capture button.
4) Using the Selector Tool in Pro Tools, highlight the desired portion of the
Replacement audio region or Dub for processing.
Again, this can be any given region or multiple regions. Your selection can
begin and end in the middle of a region.
TIP: Try to capture very slightly more “background” audio before the Dub
signal starts than you did for the Guide.
5) In VocALign Project LE, click on the Dub button or panel, and click the Capture
button
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6) Examine the non-processed alignment shown in the energy profiles.
7) The user can optionally perform several operations on the audio waveform itself
before processing. He can extend or shorten the selected regions by positioning
the cursor (arrow) at either end of the audio selections:
This indicates that by holding down the mouse button, the active region boundary
can be moved right or left by moving the mouse left or right. This is an important
operation for selecting the right amount of audio at the start and end of the
signals.
8) In addition, the user can scroll the display with the scroll bars to examine the
captured waveforms.
9) The Scale - and + buttons can be used to zoom in or out of the waveform to see
more (+) or less (-) detail in the display windows at one time.
10) Choose an appropriate setting (e.g. if the Dub is very long compared to the
Guide, try "Maximum Compression", setting number 1.)
11) Click on Align and examine the results visually. The preview button allows you to
hear the Aligned signal on its own.
12) If the alignment is satisfactory, select the destination track and press Process.
•
If the alignment does not look satisfactory, there are two main options:
a) Select another Setting (which will clear the aligned trace), press Align again, and
examine the results.
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b) Adjust the "leader" audio before the start of the Guide audio to be roughly
equivalent with the Dub "leader" being somewhat longer. See below.
Important: The Dub does not have to start at the time of the Guide. In other
words, its timecode position is not used. The Guide's timecode is important
and so is the amount of “background” captured before the Guide and the Dub.
13) The user can re-capture the Guide or Dub individually at any time and replace
any previous settings.
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Altering the Selected Region
We will next reduce the length of the Dub being processed without having to return to
Pro Tools. You may wish to do this to align only the beginning part of the dub
and leave the following part unaligned.
1) First, move the cursor to the end of the Dub filtered as shown below.
2) Next, hold down the mouse button, and a dotted line should appear. While
holding down the mouse button, drag the line to the left and release it at the point
shown in the next picture. (This does not need to be exactly the same point).
3) The above picture indicates that the selected Dub region for processing is now
much shorter than the Guide selected region.
4) Click on Align and the following result should appear:
The Selected Dub audio has been aligned to the corresponding section of the
Guide.
5) Pressing the Preview button will audition the Aligned audio.
6) Select “Audio 4” as the destination track, and click Process.
7) In Pro Tools, play the resulting track “Audio 4” with “Audio 1”.
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Moving the Dub Display for Inspection
Before or after Alignment takes place, if mouse pointer is placed over the Dub energy
display and the mouse button clicked, an Open Hand Icon will appear:
By holding down the mouse button, the Hand Icon will appear "closed" and the Dub
audio or Filtered output display can be "dragged" back or forth to check the alignment
visually. This has no effect on processing.
Processing Signals with Different Lengths
In general, it is common for either the Guide or Dub to be part of a much longer audio
regions than the other is. In most cases, the Guide region is longer (being part of a
long transfer), while the Dub is a shorter section.
In the second example in the Demo Session, however, we have a Dub that is much
longer than the Guide, and even contains extra audio at the end of the region that is
not in the Guide.
1) Open the VocALign Tutorial PT session. Make sure that the second set of audio
regions is visible.
2) The Guide (Steve Guide2) and Dub (Twit-Dub) should be played together to hear
how the Dub is not only much slower and longer than the Guide but it has extra
audio at the end.
3) Highlight the Guide audio as shown below and Capture it in VocALign by clicking
on the Guide button, and clicking on Capture.
4) Next, highlight the entire Dub as shown below, and capture it into VocALign by
clicking on the Dub button, and clicking on Capture.
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The user could chose to stop before the last part of the audio, but this example
will show that when the highlighted Guide region stops, if there is more Dub
selected to process, it will simply be added on after the alignment activity
required by the Guide is completed.
5) The following should appear:-
Before processing, the user should try to determine which modulations in the
Guide match with modulation in the Dub.
6) Next, click on the Align button and the resulting aligned (orange) trace over the
Guide should appear as shown below:
In this case, the Dub audio filter waveform is aligned up to the point where the
Guide selected waveform (shown in blue) stops, and then the rest of the Dub
filter waveform is joined on but without any modification.
7) The user should ensure that the Setting shows Normal Flexibility and that the
track “Audio 3” is selected as the destination track, and then click Process.
VocALign should generate the Aligned audio and then “spot” it into Pro Tools.
8) Play the result in Pro Tools and note the amount of time compression required to
align these two signals and also note how the end of the Aligned Dub is unedited.
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Aligning Multiple Takes
One further useful feature of VocALign Project LE is that once a Guide or Dub is
captured, you may recapture one of the signals without affecting the other. There are
many advantages to this, and in this last Example, we will use this feature to align
three different vocal tracks.
1) Return to the Pro Tools VocALign Tutorial PT session and locate the three
regions shown below and highlight the audio within the region "BG-Guide1" in
track “Audio 1” as shown. Capture this as the Guide.
You should also play these three tracks together to hear how they are aligned in
this session.
Next, carry out the following steps carefully:
2) In Pro Tools, highlight and capture the BG-Voice2 region as shown below as the
Dub.
3) Align this using Normal Flexibility, examine the sync and if it looks correct, set the
destination track to “Audio 4” and click Process. The edited region should appear
in Pro Tools track “Audio 4”.
4) Next, highlight and capture the BG-Voice3 region as shown below as the Dub.
5) Change the VocALign Project LE Setting to Low Flexibility (setting number 2).
This is to minimize the amount of editing on this voice.
6) Next, click Align and examine the alignment. Set the destination track to “Audio 5”
and click Process. The edited region should appear in Pro Tools track “Audio 5”.
7) In Pro Tools, mute tracks “Audio 2” and “Audio 3”, and play tracks “Audio 1”,
“Audio 4“ and “Audio 5” together. They should be tightly synchronized.
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Foreign Dialogue Synchronization
Summary
This section discusses the problems that arise in foreign language dialogue
replacement (dubbing) and how and when VocALign can be used to assist this
process.
Overview
The quality of lip synch that can be achieved in Foreign Dialogue Replacement
(often called Dubbing, Doublage, etc.) depends on many factors including:• The quality of the translation.
• The accuracy of the timing of the new dialogue recording.
• The ability of the editor to modify the new dialogue.
VocALign will attempt to align one set of audio modulations to another, no
matter what the audio signals are. Therefore, it can be used to align the
modulations of recorded dialogue in one language to recorded dialogue in
another language.
Thus, when there is an audio Guide Track that is in good synch with the lip
movements in the picture, VocALign can generally be used to improve the
accuracy of the lip sync of the replacement foreign dialogue.
Sometimes, unfortunately, the Guide Track will not be in close sync with the picture.
This can occur if the Guide Track is itself already badly dubbed or in a different
language from the original location recording.
In this case, even if VocALign matches the new audio modulations to the Guide, they
will be out of sync, just as the Guide is. An experienced editor must align the audio
by ear and eye in this case, and VocALign is not likely to be of much assistance.
Also, the Guide track used for dubbing can sometimes contain music and effects.
This makes the job for VocALign harder, but not impossible, since it must "ignore" the
music and effects in the Guide Track and match only to the dialogue.
Lastly, the translation may demand that the two audio signals are vastly incompatible
and result could never be totally satisfactory. In this case, the best result sometimes
comes from making the two audio signals start together and, if possible, end
together. VocALign or the use of linear time compression or expansion products
(such as Synchro Arts TimeModTM) can often help in this case, too.
Suggested Operations
Advice: Dialogue Editors should be very familiar with the use of VocALign on
dialogue replacement in the same language before attempting to use it for
foreign dialogue replacement.
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The following tips are suggestions and not rules, so the user should not only
try these techniques, but also experiment further. Every line of dialogue is
likely to need individual attention.
When to use VocALign
If the Guide Track dialogue is in sync with the picture, and the replacement foreign
dialogue has been translated and recorded to achieve good lip sync, then VocALign
should be able to improve the quality of lip sync.
Break the dialogue into appropriate length sections.
The user must remember that VocALign is deliberately restricted to stretching a part
of a signal by a factor of 2.0 (100% expansion) and compressing it by a factor of 1/2
(50% compression). If VocALign is trying to expand or compress a gap in the
speech, and it has used up its allowance, it may try to expand or compress the
neighbouring speech.
This means, for example, that if gaps in the new and replacement dialogue appear in
different places or are of very different durations, after modifying the gap region,
VocALign might also have to expand or compress the replacement speech signal
near the gap, to best align the modulations. This may lead to unwanted effects. In
this case, the user should break the signal into sections that can be individually
treated.
Sync up only the beginning of a line
To get only the beginning of a new line of dialogue to sync up with the Guide, use the
"latching" technique described earlier. This means only selecting perhaps a second
at the start of the guide that VocALign will try to sync the dub start to, and the entire
replacement line for the dub.
Minimize the amount of VocALign's Time Compression and Expansion
If VocALign is making too many timing modifications and creating unnatural sounding
speech, try using the "Low Flexibility" setting.
To align only the start and end of the replacement audio
Use a Linear Time Compression/Expansion utility (such as TimeMod™ available with
VocALign Pro and ToolBelt from Synchro Arts) to get the new dialogue to the same
length. Then use VocALign to fine tune it.
Use combinations of original and VocALigned output
By using the Process feature of VocALign in conjunction with the Copy functions of
Pro Tools, a mixture of VocALign output and the original signal is sometimes the best
way to achieve a balance between synchronized and natural sounding speech.
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Special Operations:
“Latching”
To align just the start of the Dub with the Guide (and leave the rest of the Dub
unprocessed), capture only 0.25 to 1.0 second of the Guide and capture the Dub as
normal.
Reverb tails
To stop the end of a Dub from being stretched to wrongly "fit" to a noisy or
reverberant Guide, stop the captured end of the Guide 0.25 to 1.0 second before the
Guide signal of interest ends and capture the Dub as normal.
Destination Track set to “none”
Normally, the VocALign Project LE user is advised to always select a “destination
track” in the plug-in.
However, if the destination track is set to “none” and aligned audio is “processed”, it
will be returned to Pro Tools in sync with the original guide audio, and on a track
where the cursor is present. Once aware of this fact, the VocALign Project LEuser
can make use of it to speed-up the operations involved in using VocALign Project LE:
1)
2)
3)
4)
Make sure “use in playlist” is selected
Ensure that the Dub audio is close to the Guide audio in the Pro Tools timeline.
Select the Guide audio and send it, as normal, to VocALign Project LE
Select the Dub audio and send it to VocALign Project LE, making sure the Dub
audio remains highlighted.
5) Once aligned, press “Process” with “destination track” set to “none”. The aligned
audio will be sent to the track where the Dub was taken from.
In this way, dub audio can be aligned by VocALign Project LE and updated in Pro
Tools. There is then no need for an additional track to receive the “aligned” audio.
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G)
Trouble-Shooting
Some commonly occurring problems are listed here:
Problem:
“VocALign Project LE does not appear in the AudioSuite menu.”
Solution:
Mac users: Check that the file "VocALign Audiosuite" has been copied to the
Plug-Ins folder within the DAE folder in your “System Folder”.
Windows users: Check that the files "VocALignLE.dpm" and
"VocALignLE.dpm.rsr" have been copied to the Plug-Ins folder within the DAE
folder.
Problem:
“The aligned audio appears in an incorrect destination track.”
Solution:
Make sure you have selected a destination track before pressing “Process”.
If “none” is the selected destination track, the aligned audio will appear in the
currently selected track, in sync with the Guide.
If you have renamed Pro Tools tracks whilst the plug-in window is open, the
drop-down destination track list will not reflect those changes until the plug-in
window is closed and opened again.
Problem:
“No aligned audio appears in the audio editor”.
Solution:
Make sure you have selected “use in playlist” in the VocALign Project LE
window.
Further help and advice can be found on the Synchro Arts website at
http://www.SynchroArts.com/support
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